Ace Race Parts Aluminum mandrel bends are manufactured using 6061 Aluminum tubing and are precision bent using a CNC mandrel bender in an ISO certified facility to ensure a high quality bend across a wide range of shapes and sizes. Our Aluminum mandrel bends are available in 30°, 45°, 60°, 90°, and 180° bend options with outside diameters ranging from 1.500" to 4.000". Our mandrel bends are de-burred, cleaned, and highly polished to ensure a clean finish on the ends and the surface of the bend.